Vibrating screen for plastic particles

Abstract

The utility model relates to the technical field of vibrating screens, and discloses a vibrating screen for plastic particles, which comprises a vibrating screen and a dust removal mechanism positioned above the vibrating screen, the vibrating screen comprises a screen frame, the dust removal mechanism comprises a dust cover positioned above the screen frame, and the dust cover comprises a frame body and an upper cover positioned at a top opening of the frame body. An exhaust fan is arranged at the top of the upper cover, and the air outlet side of the exhaust fan is connected with a filter mesh bag; the dust removal mechanism further comprises an air supply unit arranged in the dust cover, an adsorption unit is further arranged above the air supply unit, and evaporation units are arranged on the inner side and the outer side of the upper cover. The air supply unit is matched with the exhaust fan, the flow speed and flow of ascending airflow are further increased through the air supply unit, impurities such as chippings and dust are promoted to rapidly ascend, and it is guaranteed that the impurities large in size cannot fall back.

Description

Technical Field

[0001] This utility model belongs to the field of vibrating screen technology, specifically relating to a vibrating screen for plastic granules. Background Technology

[0002] A vibrating screen (vibrating sieve separator) is a type of mechanical equipment widely used in the production field. It primarily utilizes a vibrating motor or exciter to generate mechanical vibration, causing materials to move on the screen surface and achieving grading, impurity removal, or solid-liquid separation. For plastic granules, during the production process, their surfaces often have tiny debris or dust adhering to them. Current technology often lacks corresponding dust removal functions in vibrating screens. During the screening process, debris and dust detach from the surface of the plastic granules under the action of vibration and float upwards, not only polluting the production environment but also entering the respiratory tract with the air, affecting the health of workers. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a vibrating screen for plastic granules to solve the technical problem that vibrating screens in the prior art lack dust removal function.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A vibrating screen for plastic granules includes a vibrating screen and a dust removal mechanism located above the vibrating screen. The vibrating screen includes a screen frame, and the dust removal mechanism includes a dust cover located above the screen frame. The dust cover includes a frame and a top cover located at the top opening of the frame. An exhaust fan is provided on the top of the top cover, and a filter bag is connected to the air outlet side of the exhaust fan. The dust removal mechanism also includes an air supply unit located inside the dust cover. The air supply unit includes an air supply duct located at the bottom of the frame. Multiple air outlets are opened at the top of the air supply duct, and a blower is connected to the open end of the air supply duct. An adsorption unit is also provided above the air supply unit. The adsorption unit includes a water pipe. A high-pressure water pump is connected to the side of the water pipe through a water inlet pipe, and multiple atomizing nozzles are connected to the top of the water pipe. Evaporation units are provided on the inner and outer sides of the top cover. The evaporation unit includes an inner adsorption layer covering the inner side of the top cover and an outer evaporation layer covering the outer side of the top cover. The inner adsorption layer and the outer evaporation layer are connected by a connecting block.

[0006] Furthermore, the air supply duct is horizontally arranged and has a multi-segment continuous meandering and bending shape. The air supply duct is a closed pipe, and the open end of the air supply duct penetrates the side wall of the frame and is connected to a blower.

[0007] Furthermore, the water pipe is in the shape of a rounded rectangle;

[0008] Furthermore, a connection port is provided on the top cover, and a connecting block is provided inside the connection port to connect the inner adsorption layer and the outer evaporation layer. The inner adsorption layer, the outer evaporation layer and the connecting block are all made of sponge.

[0009] Furthermore, the inner wall of the frame is flush with the inner wall of the screen frame, and the bottom surface of the frame sits on the top surface of the screen frame and the two are fixedly connected.

[0010] Furthermore, a limiting block is fixedly connected to the inner wall of the frame. The limiting block is located below the top opening and provides support for the top cover.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) Compared with the existing technology, the exhaust fan forms an upward airflow, which drives the debris and dust to rise. The exhaust fan is connected to a filter bag, which recovers the debris, dust and other impurities sucked out, thus achieving the dust removal effect.

[0013] (2) The blower continuously inputs air force into the air supply duct, and the air force is discharged through the air outlet to form an upward airflow. The air supply unit works in conjunction with the exhaust fan to further enhance the speed and flow rate of the upward airflow, so as to promote the rapid rise of debris, dust and other impurities and ensure that larger impurities do not fall back.

[0014] (3) The water in the storage tank is pressurized by a high-pressure water pump and pumped into the water pipe. The water in the water pipe forms an upward spray of water mist under the action of the atomizing nozzle. On the one hand, the droplets in the water mist are extremely small and light in weight, and can continue to float upward under the wind force of the exhaust fan and the air supply unit. On the other hand, the water mist has a large contact area, and can capture and collect impurities such as dust by adsorbing the droplets, thereby further improving the dust removal effect.

[0015] (4) The inner adsorption layer adsorbs and collects the water mist that rises to the top. The adsorbed and collected water enters the outer evaporation layer along the connecting block under capillary action. The liquid water is converted into gas through the evaporation layer, which continuously consumes the water in the inner adsorption layer to prevent the phenomenon of accumulation and dripping. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is an overall schematic diagram of the vibrating screen for plastic granules in Embodiment 1 of this utility model;

[0018] Figure 2 This is a top view (with the top cover hidden) of the vibrating screen for plastic granules in Embodiment 1 of this utility model.

[0019] Figure 3 for Figure 2 Enlarged view at point A1;

[0020] Figure 4 This is a cross-sectional view of the vibrating screen for plastic granules in Embodiment 1 of this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of section A2 in the middle.

[0022] The following labels are shown in the attached diagram:

[0023] Vibrating screen 1, screen frame 101, feed inlet 102, discharge outlet 103, screen mesh 104, support block 105, support column 106, spring 107, discharge cover 108, discharge pipe 109, vibrating motor 110, dust removal mechanism 2, dust cover 201, frame 202, top cover 203, exhaust fan 204, air supply duct 205, blower 206, first support rod 207, air outlet 208, water pipe 209, high-pressure water pump 210, second support rod 211, atomizing nozzle 212, inner adsorption layer 213, outer evaporation layer 214, connection port 215, connection block 216. Detailed Implementation

[0024] Example 1, specifically as follows: Figures 1-5 As shown.

[0025] A vibrating screen for plastic granules includes a vibrating screen 1 and a dust removal mechanism 2 located above the vibrating screen 1.

[0026] like Figure 1 As shown, the vibrating screen 1 includes a rectangular screen frame 101. The bottom of both ends of the screen 101 are provided with opposing feed inlets 102 and outlets 103. A screen mesh 104 is provided at the bottom of the screen frame 101, and the screen mesh 104 is fixedly connected to the screen frame 101 by welding. It is worth emphasizing that the upper surface of the screen mesh 104 is flush with the bottom surface of the feed inlet 102, thus ensuring that the material can smoothly slide through the feed inlet 102 onto the screen mesh 104.

[0027] Support blocks 105 are welded to the four sides of the vibrating screen 1. A support column 106 is provided directly below the support block 105 with a gap between them. The bottom surface of the support column 106 is in contact with the ground. A vertical spring 107 is provided between the support column 106 and the support block 105. The top end of the spring 107 is welded and fixed to the bottom surface of the support block 105, and the bottom end of the spring 107 is welded and fixed to the top surface of the support column 106.

[0028] like Figure 2As shown, the screen 104 is divided into three equal screening areas along the material movement direction. Each screening area has a different screen aperture. In this embodiment, the screen aperture in the three screening areas gradually increases along the material movement direction, thus enabling the screening of plastic particles with three different particle size ranges. Additionally, each screening area is equipped with an independent discharge hood 108, which is funnel-shaped and connected to a discharge pipe 109 at its bottom. The screened plastic particles fall into the discharge hood 108 and are discharged through the discharge pipe 109. A vibration motor 110 is also provided on the outer surface of the discharge hood 108 located in the middle position. The vibration motor 110 is fixedly connected to the discharge hood 108 with bolts.

[0029] The dust removal mechanism 2 includes a dust cover 201 located above the screen frame 101. The dust cover 201 encloses the upper space of the vibrating screen 1, thereby preventing dust and debris from scattering. The dust cover 201 includes a rectangular frame 202 and a top cover 203 located at the top opening of the frame 202. In this embodiment, the inner wall of the frame 202 is flush with the inner wall of the screen frame 101, and the bottom surface of the frame 202 rests on the top surface of the screen frame 101 and the two are welded together. A limiting block is welded to the inner wall of the frame 202. The limiting block is located below the top opening and provides support for the top cover 203.

[0030] The top of the cover 204 has a raised center to form a flat surface with a through hole. A fan 204 is installed at the through hole. The fan 204 generates an upward airflow, which carries debris and dust upward. A filter bag (not shown in the figure) is connected to the air outlet side of the fan 204. The filter bag collects the debris, dust and other impurities sucked out.

[0031] The dust removal mechanism 2 also includes an air supply unit located inside the dust cover 201, such as... Figure 2 , Figure 3 As shown, the air supply unit includes an air supply duct 205 located at the bottom of the frame 202. The air supply duct 205 is horizontally arranged and has a multi-segment continuous meandering shape, with multiple evenly spaced air outlets 208 on its top. The air supply duct 205 is a closed pipe, with its open end penetrating the side wall of the frame 202 and connected to a blower 206. A horizontal first support rod 207 is provided between the closed end of the air supply duct 205 and the side wall of the frame 202, providing support for the air supply duct 205.

[0032] In use, the blower 206 continuously inputs air force into the air supply duct 205, and the air force is discharged through the air outlet 208 to form an upward airflow. The air supply unit works in conjunction with the exhaust fan 204 to further enhance the speed and flow of the upward airflow, causing debris, dust and other impurities to rise rapidly and ensuring that larger impurities do not fall back down.

[0033] like Figure 2 , Figure 3 As shown, an adsorption unit is also provided above the air supply unit. The adsorption unit includes a horizontal water pipe 209, which is rectangular with rounded corners. A water inlet pipe is connected to the side of the water pipe 209. The water inlet pipe penetrates the side wall of the frame 202 and is connected to a high-pressure water pump 210. A water storage tank is connected to the water inlet end of the high-pressure water pump 210. A second support rod 211 is provided between the side of the water pipe 209 away from the water inlet pipe and the side wall of the frame 202. The two ends of the second support rod 211 are welded and fixed to the water pipe 209 and the frame 202, respectively, providing support for the water pipe 209. Multiple atomizing nozzles 212 are connected to the top of the water pipe 209. In this embodiment, there are four atomizing nozzles 212, which are distributed on both sides of the length of the water pipe 209.

[0034] In use, the water in the storage tank is pressurized by the high-pressure water pump 210 and pumped into the water pipe 209. The water in the water pipe 209 forms an upward spray of water mist under the action of the atomizing nozzle 212. On the one hand, the droplets in the water mist are extremely small and lightweight, and can continue to float upward under the wind force of the exhaust fan 204 and the air supply unit. On the other hand, the water mist has a large contact area, and can capture and collect impurities such as dust by adsorbing the droplets, thereby further improving the dust removal effect.

[0035] To prevent water mist from adhering to the inner surface of the upper cover 203 and condensing into water droplets, in this embodiment, evaporation units are provided on both the inner and outer sides of the upper cover 203, such as... Figure 4 , Figure 5 As shown, the evaporation unit includes an inner adsorption layer 213 covering the inner surface of the upper cover 203 and an outer evaporation layer 214 covering the outer surface of the upper cover 203. Both the inner adsorption layer 213 and the outer evaporation layer 214 are fixed by adhesive bonding. A connection port 215 is provided on the upper cover 203, and a connecting block 216 is provided within the connection port 215, connecting the inner adsorption layer 213 and the outer evaporation layer 214 through the connecting block 216. It is worth emphasizing that the inner adsorption layer 213, the outer evaporation layer 214, and the connecting block 216 are all made of porous materials; in this embodiment, all three are made of sponge.

[0036] In use, the inner adsorption layer 213 adsorbs and collects the water mist that rises to the top. The adsorbed and collected water enters the outer evaporation layer 214 along the connecting block 216 under capillary action. The evaporation layer 214 converts the liquid water into gas, continuously consuming the water in the inner adsorption layer 213 and preventing the phenomenon of accumulation and dripping.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A vibratory screen for plastic pellets, characterized by, The dust removal mechanism includes a dustproof cover above the screen frame, the dustproof cover includes a frame body and an upper cover at the top opening of the frame body, the top of the upper cover is provided with an air extractor, and the air outlet side of the air extractor is connected with a filter screen bag; the dust removal mechanism further includes a air supply unit arranged in the dustproof cover, the air supply unit includes an air supply duct pipe at the bottom of the frame body, the top of the air supply duct pipe is provided with a plurality of air outlet holes, and the opening end of the air supply duct pipe is communicated with a blower; the air supply unit is further provided with an adsorption unit above, the adsorption unit includes a water pipe, a high-pressure water pump is communicated with the water pipe through a water inlet pipe on the side edge of the water pipe, and a plurality of atomizing nozzles are communicated with the top of the water pipe; the inner and outer sides of the upper cover are provided with evaporation units, the evaporation units include an inner adsorption layer covering the inner side of the upper cover and an outer evaporation layer covering the outer side of the upper cover, and the inner adsorption layer and the outer evaporation layer are connected through a connecting block.

2. The vibrating screen for plastic particles according to claim 1, characterized in that, The air supply duct pipe is horizontally arranged and in a multi-section continuous meandering bent shape, the air supply duct pipe is a closed pipe, and the opening end of the air supply duct pipe penetrates the side wall of the frame body and is communicated with the blower.

3. The vibratory screen for plastic pellets according to claim 1, characterized in that, The water pipe is in a round rectangular shape.

4. The vibratory screen for plastic pellets according to claim 1, wherein The upper cover is provided with a connecting port, the connecting port is provided with a connecting block, and the inner adsorption layer and the outer evaporation layer are connected through the connecting block, and the inner adsorption layer, the outer evaporation layer and the connecting block are all made of sponge.

5. The vibrating screen for plastic particles according to any one of claims 1 to 4, characterized in that, The inner wall of the frame body is flush with the inner wall of the screen frame, the bottom surface of the frame body is located on the top surface of the screen frame, and the two are fixedly connected.

6. The vibratory screen for plastic pellets according to claim 5, characterized in that, The inner wall of the frame body is fixedly connected with a limiting block, the limiting block is located below the top opening, and the upper cover is supported by the limiting block.

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